Aluminium nitride ceramic substrate slurry

An aluminum nitride ceramic and slurry technology, applied in the field of ceramic materials, can solve the problems of poor thermal shock resistance, low flexural strength, poor mechanical properties, etc., and achieve the effect of reducing production cost, reducing environmental pollution and better performance

Inactive Publication Date: 2018-01-05
莱鼎电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing AlN ceramic substrates are generally prepared by adding sintering aids and aluminum nitride powder together, then undergoing molding processes such as dry pressing or tape casting, and then sintering. The AlN

Method used

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  • Aluminium nitride ceramic substrate slurry
  • Aluminium nitride ceramic substrate slurry
  • Aluminium nitride ceramic substrate slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In this embodiment, the aluminum nitride ceramic substrate slurry is composed of the following components by weight: 800 parts of aluminum nitride ceramic powder, 240 parts of benzene-free ternary solvent system, 15 parts of dispersant, compound auxiliary 40 parts of sintering agent, 4 parts of toughening system and 8 parts of binder; wherein, the aluminum nitride ceramic powder has a smaller particle size and a uniform particle size distribution, that is, the surface area is 2.8m 2 / g of aluminum nitride ceramic powder, and the alumina ceramic powder includes the following elements: Al 64.6%, N34.4%, O 0.9%, C 0.06%, Ca 3×10 -4 % and Fe 2 x 10 -5 %; the benzene-free ternary solvent system is a mixed solvent of ethanol, isopropanol and butanone, and the mass ratio of ethanol, isopropanol and butanone is 1:1:2; the dispersant is selected from sodium polyacrylate, the The composite sintering aid is Li 2 O-CaO-YF 3 Composite sintering aid, and Li 2 O, CaO and YF 3 The...

Embodiment 2

[0025] Compared with Example 1, the content of each component remains unchanged, only the mass ratio of ethanol, isopropanol and butanone in the benzene-free ternary solvent system is changed to 1:1:3.

Embodiment 3

[0027] Compared with Example 1, the content of each component remains unchanged, only the mass ratio of ethanol, isopropanol and butanone in the benzene-free ternary solvent system is changed to 1:1:2.5.

[0028] The following table 1 is a mass ratio comparison table of ethanol, isopropanol and butanone in the benzene-free ternary solvent system in Examples 1-3:

[0029]

[0030]

[0031] In order to test the performance of the aluminum nitride ceramic substrate prepared with the aluminum nitride ceramic substrate slurry of Examples 1-3, the aluminum nitride ceramic substrate slurry of each embodiment was made by tape casting Tablet, and then test each sample of the aluminum nitride ceramic substrate, the performance test results are shown in Table 2.

[0032] The performance test data of the aluminum nitride ceramic substrate of table 2 embodiment 1-3 aluminum nitride ceramic substrate slurry system

[0033]

[0034] Conclusion: As can be seen from the above table, ...

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Abstract

The invention relates to aluminium nitride ceramic substrate slurry. The slurry comprises the following components in parts by weight: 800-900 parts of aluminium nitride ceramic powder, 240-300 partsof a benzene-free ternary solvent system, 15-25 parts of a dispersant, 40-50 parts of a composite sintering aid, 4-6 parts of a toughening system, and 8-10 parts of a binder; the aluminium nitride ceramic powder having a surface area of 2.8m<2>/g is selected for aluminium nitride ceramic powder, the benzene-free ternary solvent system is a mixed solvent of ethanol, isopropanol and butanone, the dispersant selects one of sodium polyacrylate, polysorbate and polyethylene glycol, the composite sintering aid is Li2O-CaO-YF3 composite sintering aid, the toughening system contains mixed metal particles of Mo, W and NbC, and the binder is polyvinyl butyral. The slurry has the advantages that the each component raw material in the slurry is adjusted and optimized, content of each component raw material is strictly controlled, and comprehensive properties of the aluminium nitride ceramic substrate are better.

Description

technical field [0001] The invention relates to the field of ceramic materials, mainly to the technical field of preparation of ceramic substrates, in particular to an aluminum nitride ceramic substrate slurry. Background technique [0002] With the improvement of the integration of high-power module circuits and the development of high-power LEDs, higher requirements are placed on the insulating substrate materials used. Aluminum nitride ceramic materials have been widely used in various large-scale applications due to their high thermal conductivity. Insulating substrate material for power electronic components. [0003] The existing AlN ceramic substrates are generally prepared by adding sintering aids and aluminum nitride powder together, then undergoing molding processes such as dry pressing or tape casting, and then sintering. The AlN ceramic substrates prepared by this method have It has high thermal conductivity and good electrical properties, but it has poor mechan...

Claims

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Application Information

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IPC IPC(8): C04B35/581C04B35/632
Inventor 马立斌何竟宇韩旭谢小荣倪红军吕帅帅汪兴兴
Owner 莱鼎电子材料科技有限公司
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